This is the 1520th most frequent French word.
entrer
To enter.
Here, 'entrer' is used with 'dans' followed by a location, indicating the action of moving inside that place.
Pierre peut entrer dans la maison.
Pierre can enter the house.
In this context, 'entrer' is metaphorically used to signify becoming a part of or joining a group or entity.
Je veux entrer dans l'équipe de football.
I want to join the football team.
Here, 'entrer' describes the physical action of going into a medium, in this case, water.